Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4258
FMI: 4

Description: Injector Amplifier Control Valve Cylinder 4, 5, 6 Shorted to Battery
Troubleshooting:
DESCRIPTION:
This code sets when the MCM detects that there is a short to ground on the circuits for the
injector amplifier control valve on cylinders 4, 5 and/or 6.
MONITORED PARAMETER:
Injector Amplifier Control Valve Cylinder 4, 5, 6.
TYPICAL ENABLING CONDITIONS:
Fuel injector system nozzle opening pressure greater than 1.85.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine rpm 1400 – 1500 (1 minute).
POSSIBLE CAUSES:
1. Faulty under valve cover harness.
2. engine side harness connector needs cleaning.
3. Spread pins.
4. Damaged pins.
5. Faulty wiring.
6. Faulty fuel injector #4.
7. Faulty fuel injector #5.
8. Faulty fuel injector #6.
9. Faulty MCM.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4331
FMI: 15

Description: DEF Dosing Quantity Low
Troubleshooting:
DESCRIPTION:
The fault indicates low DEF delivery.
MONITORED PARAMETER:
NOx Conversion Efficiency.
TYPICAL ENABLING CONDITIONS:
Closed loop DEF dosing.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
None
ENGINE REACTION:
None
VERIFICATION:
Parked SCR efficiency test followed by a full parked regeneration.
POSSIBLE CAUSES:
1. Damaged DEF supply lines.
2. DEF tank needs Cleaning/flushing.
3. Faulty DEF dosing unit.
4. Bent pins.
5. Spread pins.
6. Corroded pins.
7. Faulty DEF pump.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4332
FMI: 31

Description: DOC Inlet Temperature Out of Range Low Preventing Dosing
Troubleshooting:
NOTE: The fault indicates the high idle regeneration (HIR) was aborted due to diesel oxidation
catalyst (DOC) inlet temperature not reaching the minimum of 270°C (518°F) to initiate dosing
during and HIR. The malfunction indicator lamp (MIL) will remain ON until the fault is resolved
or a successful regeneration is complete.
DESCRIPTION:
DOC inlet temperature out of range low.
MONITORED PARAMETER:
DOC temperature
TYPICAL ENABLING CONDITIONS:
Regeneration
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Parked regeneration
NOTE: Retain log file if customer assistance is required.
POSSIBLE CAUSES:
1. Faulty DOC inlet temperature sensor.
2. Parked regen needed.
3. Faulty Intake Throttle Valve (ITV).
4. Leaks in the exhaust system.

5. Leaks in the intake tract.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4334
FMI: 3

Description: Diesel Exhaust Fluid Pressure Sensor Circuit Failed High
Troubleshooting:
DESCRIPTION:
Diesel exhaust fluid (DEF) pressure sensor circuit voltage above normal, or shorted to high
source.
MONITORED PARAMETER:
Diesel Exhaust Fluid (DEF) pressure sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine idle (1 minute).
POSSIBLE CAUSES:
1. Damaged pins.
2. Bent pins.
3. Spread pins.
4. Broken pins.
5. Pushed out pins.
6. Corroded pins.
7. Faulty DEF dosing unit.
8. Faulty wiring.
9. Faulty ACM.